A Novel 5kW Ruggedized Integrated Hybrid Generator System (RIHGS)

This study provides an overview of the 5 kW Ruggedized Integrated Hybrid Generator System (RIHGS) developed by Enginuity Power Systems for the U.S. Army. Designed to replace three existing generator models (MEP-531A, MEP-831A, and RMP-1030A), the RIHGS features; variable-speed load following (1 to 5 kW output at 120/208V), multi-fuel capability (JP8 and Diesel #2), liquid-cooled permanent magnet motor, silicon-carbide power electronics with a bidirectional inverter, software-based controls for efficient operation, thermal management-focused enclosure design. Experimental results confirm the system maintains normal operating temperatures at full power. When using JP8 fuel, engine performance remained stable at 3000 RPM and matched Diesel #2, though fuel economy declined at lower speeds. Compared to the RMP-1030A, the RIHGS improved fuel efficiency by 4.6% on a weighted load factor. Additionally, it demonstrated fast transient load responses (<1 sec) when stepping up from 1 to 5 kW. This generator combines efficiency, adaptability, and advanced technology to enhance field power solutions for military operations